Method of forming securing means on the rims of jars



July 29, 1930. H. F. COORS 1,771,618

METHOD OF FORMING SECURING MEANS ON THE RIMS OF JARS Filed Oct. 15, 1927 slots 6 which extend into the guide blocks 4, as illustrated at 7. After the die ring 3 has been mounted on the rim 22, forming the recesses 5, the cutter 8 is inserted in the slots 6 to form fromthe recesses 5 inclined ways or slots?) intowhich thelugs 10 of the cap 11 areadap ted to'pass after the cap has been mounted on the rim 2 so that the lugs 10 pass downwardly through the recesses i') until they are engaged in' the ways 9. Thecap 11 is then rotated and'the rotation of the cap 11 with the lugs 10 in the ways 9 causes the cap 11 to be drawn downwardly on the rim 2 to form a fiuid-tight connection hetween the rim 2 and cap 11 by means of a'washer of resilient material which is customarily provided be tween such a cap ll'and rim 2.

The cutter tool 8 is formed of a shank 12 to which a handle 13 is secured. The end of the shank 12 is curved to provide a loop cutter 14; which is'fitted into the slots 6 in order to form the'ways 9 and is also'bent to form a stop section 15 whichengages the'edge of the die 3 in order todetermine the depth to which the ways 9 are formed in the ring 2 of the jar or bottle 1.

In case this'method is-employed on jars formed of clay, the recesses -5 and inclined ways are formed in the ring 2-pr1or to the drying and burning of the clay, and in case this method'an'd means are employed in formingthe securing means for -a cap em'- bodyingthisinvention' in a glass jar, it is believed-that it would be advisable to employ the die on the rim ofthe jar after the glass has-been blown and emp'loying"in the die 3 cutters .p'referablyof-the diamond type and similar to the tool 8' but having'a diamond cutter carried on its end to form the ways 9.

I It is also possible to form the jar embodying this invention of glass by blowing glass intoa mold having means for forming the vertically extending recesses 5 and the inclined ways 9 during the blowing of the jar.

Having fully described my invention, it is to be understood that I do not wish to be limited to the details herein setforth, which may obviously be varied without departing from the spirit of my invention as defined in the appended claims.

' Iclaim:

vertically extending recesses in the rim of the jar, and cutting out inclined ways in therim of said'jar communicating withsaid recesses; 2. A method-of forming ars-having cover securing means including-the molding of the jam-forming vertically extending ways in the rimof the jar, and cutting out, inclined slots in the rim of said jar from said recesses.

3.0The method of forming a jar of clay or the like, including molding the jarwith a f rim, forming vertically extending slots in said rim, and inclined ways from said slots prior to the drying of said clay.

4. The method of forming securing means on the rim of a jar including the forming of vertically extending recesses in the rim of the jar, mounting a die ring on the rim, inserting a cutting tool in slots formed in the guide ring, and moving said cutting tool longitudinally in said slot to form inclined slots in the rim of said jar from said recesses.

5. The method of forming securing means on the rim of a jar or a cover including the forming of a plurality of diametrically opposed vertically extending recesses in the rim of the jar, fitting a die ring on the rim of the ]ar with lugs extending into said recesses, inserting a cutting tool in guide slots formed in the die ring, and moving the cutting tool in the guide slots to form inclined ways in the rim of the jar to extend downwardly from the said recesses.

Signed at Los Angeles, California, this 5 day of October, 1927. Y

' HERMAN F. COOKS. 

